Re: the beautiful explanations in sciences?bypasses the experiments..

From: ZZBunker (zzbunker_at_netscape.net)
Date: 09/19/04 

Date: 19 Sep 2004 06:54:12 -0700

arjdombivli@indiatimes.com (ashok) wrote in message news:<1dc813f.0409182030.79f99838@posting.google.com>...
> Hi all!
>
> Arstotle's stated that two different bodies having different weight
> dropped from the same height will do not reach the earth at the same
> time but heavier body will reach first.
> Probably Aristotle had experimented with taking a feather like body
> which doesn't break the air resistance and another heavier body and
> hence could had wrongly stated.
>
> But I am more fascinated with the Galileo's explaination to "why any
> two bodies dropped from the same height reach the earth at the same
> time irrespective of their weight" .(I am putting it in my own words)
> "suppost two canon balls having weight 6kg and 3kg (all figures are
> mine)dropped from the same height then according the Aristotle their
> velocity to reach the earth and hence the time will dependent of the
> weight of the balls.The 6kg ball will take half of the time to 3kg
> ball.
> Suppose 3 kg ball take 30 seconds to reach the earth and hence the 6
> kg ball will take 15 seconds.
>
> Now suppost the two balls are tied together and dropped from the
> previous height then what will happen.
> The 3 kg weight will resist to reach the earth in less than 30 seconds
> and the 6 kg will try to reach in 15 seconds .So the two balls'
> assembly will reach in (30+15)/2 = 22.5 seconds.
> but the assembly has an overall weight of 9 kg and hence it should
> reach in 10 seconds(This is all if we take Aristotle's statement to be
> correct.)
> So the two answer shows a paradox and hence Aristotle's statement is
> definitely wrong."
>
> The most interesting part to me in above (of course refering to
> Galileo's original explaination) explanaition is it hardly requires
> any experiment.
> since the mathematical and logical deductions are so intelligent and
> complete in themselves that one can get convinced by merely reading
> it.
> It hardly requires any experiment.

  It requires lots of experiments. Since Galileo
  not only dropped balls from a tower. He measured
  how fast they drop. Otherwise his theory of gravity
  would be no different than Aristotles:
  
  Comparative Philosophy (in Italy rather than Greece).

>
> Now I want to know , are their any such beatiful and intelligent
> explanaitions in physics which totally eliminates the necessity of an
> experiment for their proof?(i.e the explanaitions are complete in
> themselves.?)

  Yes. Euclidean Geometry has no proofs.
  All it has is axioms.

> (I feel that Einstein's explanaition about "why light's speed is
> absolute?" is totally a masterpiece of logical analysis. )
>
> Thanking you,
>
>
> Regards,
> arj

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